Bug Tracker item #2990455, was opened at 2010-04-21 17:08
Message generated for change (Comment added) made by sbajic
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=1126467&aid=2990455&group_id=250683

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Category: None
Group: None
Status: Open
Resolution: None
>Priority: 9
Private: No
Submitted By: borei (boreix)
>Assigned to: Stevan Bajic (sbajic)
Summary: glibc detected double free or corruption

Initial Comment:
Training ham / spam corpora...
[test: spam   ] spam/1270805719.H355503P3831.mai result: *** glibc detected *** 
/usr/local/bin/dspam: double free or corruption (!prev): 0x08356b08 ***
======= Backtrace: =========
/lib/libc.so.6[0x899595]
/lib/libc.so.6(cfree+0x59)[0x8999d9]
/usr/local/bin/dspam(process_message+0xaeb)[0x80523fb]
/usr/local/bin/dspam(process_users+0x9ac)[0x805362c]
/usr/local/bin/dspam(main+0x440)[0x8054340]
/lib/libc.so.6(__libc_start_main+0xdc)[0x845e9c]
/usr/local/bin/dspam[0x804ae41]
======= Memory map: ========
00101000-00142000 r-xp 00000000 fd:00 622657     /lib/libssl.so.0.9.8b
00142000-00146000 rwxp 00040000 fd:00 622657     /lib/libssl.so.0.9.8b
001d0000-001d1000 r-xp 001d0000 00:00 0          [vdso]
00254000-0025f000 r-xp 00000000 fd:01 3048022    
/usr/local/lib/dspam/libpgsql_drv.so.7.0.0
0025f000-00260000 rwxp 0000b000 fd:01 3048022    
/usr/local/lib/dspam/libpgsql_drv.so.7.0.0
00557000-0056b000 r-xp 00000000 fd:01 2624430    
/usr/local/lib/libdspam.so.7.0.0
0056b000-0056c000 rwxp 00014000 fd:01 2624430    
/usr/local/lib/libdspam.so.7.0.0
0056c000-0056d000 rwxp 0056c000 00:00 0 
00812000-0082c000 r-xp 00000000 fd:00 622608     /lib/ld-2.5.so
0082c000-0082d000 r-xp 00019000 fd:00 622608     /lib/ld-2.5.so
0082d000-0082e000 rwxp 0001a000 fd:00 622608     /lib/ld-2.5.so
00830000-0096f000 r-xp 00000000 fd:00 622614     /lib/libc-2.5.so
0096f000-00970000 --xp 0013f000 fd:00 622614     /lib/libc-2.5.so
00970000-00972000 r-xp 0013f000 fd:00 622614     /lib/libc-2.5.so
00972000-00973000 rwxp 00141000 fd:00 622614     /lib/libc-2.5.so
00973000-00976000 rwxp 00973000 00:00 0 
00978000-0097a000 r-xp 00000000 fd:00 622628     /lib/libdl-2.5.so
0097a000-0097b000 r-xp 00001000 fd:00 622628     /lib/libdl-2.5.so
0097b000-0097c000 rwxp 00002000 fd:00 622628     /lib/libdl-2.5.so
0097e000-009a3000 r-xp 00000000 fd:00 622615     /lib/libm-2.5.so
009a3000-009a4000 r-xp 00024000 fd:00 622615     /lib/libm-2.5.so
009a4000-009a5000 rwxp 00025000 fd:00 622615     /lib/libm-2.5.so
009a7000-009bb000 r-xp 00000000 fd:00 622632     /lib/libpthread-2.5.so
009bb000-009bc000 r-xp 00013000 fd:00 622632     /lib/libpthread-2.5.so
009bc000-009bd000 rwxp 00014000 fd:00 622632     /lib/libpthread-2.5.so
009bd000-009bf000 rwxp 009bd000 00:00 0 
009c1000-009fc000 r-xp 00000000 fd:00 622647     /lib/libsepol.so.1
009fc000-009fd000 rwxp 0003a000 fd:00 622647     /lib/libsepol.so.1
009fd000-00a07000 rwxp 009fd000 00:00 0 
00a09000-00a1f000 r-xp 00000000 fd:00 622649     /lib/libselinux.so.1
00a1f000-00a21000 rwxp 00015000 fd:00 622649     /lib/libselinux.so.1
00a23000-00a35000 r-xp 00000000 fd:01 2755350    /usr/lib/libz.so.1.2.3
00a35000-00a36000 rwxp 00011000 fd:01 2755350    /usr/lib/libz.so.1.2.3
00a43000-00a56000 r-xp 00000000 fd:00 622622     /lib/libnsl-2.5.so
00a56000-00a57000 r-xp 00012000 fd:00 622622     /lib/libnsl-2.5.so
00a57000-00a58000 rwxp 00013000 fd:00 622622     /lib/libnsl-2.5.so
00a58000-00a5a000 rwxp 00a58000 00:00 0 
00a5c000-00a65000 r-xp 00000000 fd:00 622629     /lib/libcrypt-2.5.so
00a65000-00a66000 r-xp 00008000 fd:00 622629     /lib/libcrypt-2.5.so
00a66000-00a67000 rwxp 00009000 fd:00 622629     /lib/libcrypt-2.5.so
00a67000-00a8e000 rwxp 00a67000 00:00 0 
00a90000-00a9f000 r-xp 00000000 fd:00 622627     /lib/libresolv-2.5.so
00a9f000-00aa0000 r-xp 0000e000 fd:00 622627     /lib/libresolv-2.5.so
00aa0000-00aa1000 rwxp 0000f000 fd:00 622627     /lib/libresolv-2.5.so
00aa1000-00aa3000 rwxp 00aa1000 00:00 0 
00aa5000-00ab0000 r-xp 00000000 fd:00 622618     
/lib/libgcc_s-4.1.2-20080825.so.1
00ab0000-00ab1000 rwxp 0000a000 fd:00 622618     
/lib/libgcc_s-4.1.2-20080825.so.1
00ae9000-00b08000 r-xp 00000000 fd:01 2755358    /usr/lib/libpq.so.4.1
00b08000-00b09000 rwxp 0001f000 fd:01 2755358    /usr/lib/libpq.so.4.1
00b45000-00b47000 r-xp 00000000 fd:00 622654     /lib/libcom_err.so.2.1
00b47000-00b48000 rwxp 00001000 fd:00 622654     /lib/libcom_err.so.2.1
00b4a000-00b4c000 r-xp 00000000 fd:00 622646     /lib/libkeyutils-1.2.so
00b4c000-00b4d000 rwxp 00001000 fd:00 622646     /lib/libkeyutils-1.2.so
00b4f000-00c6c000 r-xp 00000000 fd:00 622655     /lib/libcrypto.so.0.9.8b
00c6c000-00c7f000 rwxp 0011c000 fd:00 622655     /lib/libcrypto.so.0.9.8b
00c7f000-00c82000 rwxp 00c7f000 00:00 0 
00c84000-00d14000 r-xp 00000000 fd:01 2755133    /usr/lib/libkrb5.so.3.3
00d14000-00d17000 rwxp 0008f000 fd:01 2755133    /usr/lib/libkrb5.so.3.3
00d19000-00d21000 r-xp 00000000 fd:01 2755054    /usr/lib/libkrb5support.so.0.1
00d21000-00d22000 rwxp 00007000 fd:01 2755054    /usr/lib/libkrb5support.so.0.1
00d24000-00d49000 r-xp 00000000 fd:01 2755128    /usr/lib/libk5crypto.so.3.1
00d49000-00d4a000 rwxp 00025000 fd:01 2755128    /usr/lib/libk5crypto.so.3.1
00d4c000-00d79000 r-xp 00000000 fd:01 2755142    /usr/lib/libgssapi_krb5.so.2.2
00d79000-00d7a000 rwxp 0002d000 fd:01 2755142    /usr/lib/libgssapi_krb5.so.2.2
00fa4000-00fad000 r-xp 00000000 fd:00 622665     /lib/libnss_files-2.5.so
00fad000-00fae000 r-xp 00008000 fd:00 622665     /lib/libnss_files-2.5.so
00fae000-00faf000 rwxp 00009000 fd:00 622665     /lib/libnss_files-2.5.so
08048000-0805e000 r-xp 00000000 fd:01 2624431    /usr/local/bin/dspam
0805e000-0805f000 rw-p 00015000 fd:01 2624431    /usr/local/bin/dspam
08344000-083bf000 rw-p 08344000 00:00 0          [heap]
b7f12000-b7f15000 rw-p b7f12000 00:00 0 
b7f1b000-b7f1c000 rw-p b7f1b000 00:00 0 
bf96e000-bf983000 rw-p bffea000 00:00 0          [stack]
sh: line 1: 28938 Aborted


valgrind points to dsapm.c line 856
==29060== Invalid free() / delete / delete[]
==29060==    at 0x4004FDA: free (vg_replace_malloc.c:233)
==29060==    by 0x80523FA: process_message (dspam.c:856)
==29060==    by 0x805362B: process_users (dspam.c:1869)
==29060==    by 0x805433F: main (dspam.c:265)
==29060==  Address 0x42A7E90 is 0 bytes inside a block of size 12,744 free'd
==29060==    at 0x4004FDA: free (vg_replace_malloc.c:233)
==29060==    by 0x4016CF6: _ds_operate (libdspam.c:1150)
==29060==    by 0x4017A47: dspam_process (libdspam.c:593)
==29060==    by 0x804DB3A: user_classify (dspam.c:1471)
==29060==    by 0x804DD63: ensure_confident_result (dspam.c:2760)
==29060==    by 0x8052681: process_message (dspam.c:556)
==29060==    by 0x805362B: process_users (dspam.c:1869)
==29060==    by 0x805433F: main (dspam.c:265)
==29060== 
==29060== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 68 from 1)
==29060== malloc/free: in use at exit: 40 bytes in 2 blocks.
==29060== malloc/free: 10,138 allocs, 10,137 frees, 1,463,740 bytes allocated.
==29060== For counts of detected errors, rerun with: -v
==29060== searching for pointers to 2 not-freed blocks.
==29060== checked 87,252 bytes.
==29060== 
==29060== LEAK SUMMARY:
==29060==    definitely lost: 0 bytes in 0 blocks.
==29060==      possibly lost: 0 bytes in 0 blocks.
==29060==    still reachable: 40 bytes in 2 blocks.
==29060==         suppressed: 0 bytes in 0 blocks.
==29060== Reachable blocks (those to which a pointer was found) are not shown.
==29060== To see them, rerun with: --show-reachable=yes


----------------------------------------------------------------------

>Comment By: Stevan Bajic (sbajic)
Date: 2010-04-21 20:16

Message:
Hallo boreix

Are you able to trigger that error when ever you need/want? Could you try
to run that command then from within GDB and produce an backtrace?

Stevan

----------------------------------------------------------------------

Comment By: borei (boreix)
Date: 2010-04-21 17:27

Message:
[r...@ex-relay04 dspam]# gcc -v
Using built-in specs.
Target: i386-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada
--enable-java-awt=gtk --disable-dssi --enable-plugin
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic
--host=i386-redhat-linux
Thread model: posix
gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)

----------------------------------------------------------------------

Comment By: borei (boreix)
Date: 2010-04-21 17:26

Message:
[r...@ex-relay04 dspam]# rpm -qa | grep glibc
glibc-common-2.5-42.el5_4.3
glibc-2.5-42.el5_4.3
glibc-devel-2.5-42.el5_4.3
glibc-headers-2.5-42.el5_4.3


[r...@ex-relay04 dspam]# uname -a
Linux ex-relay04.server.parasun.com 2.6.18-128.1.6.el5 #1 SMP Wed Apr 1
09:19:18 EDT 2009 i686 i686 i386 GNU/Linux

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=1126467&aid=2990455&group_id=250683

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